Audio speaker



FIG. 1 is perspective view of an audio speaker of the present invention;

FIG. 2 is a top plan view of FIG. 1;

FIG. 3 is front elevation view of FIG. 1, the rear elevation view on the opposing side being identical; and,

FIG. 4 is a side view of FIG. 1, the opposing side view being identical. 

The ornamental design for an audio speaker, as shown and described. 